Felt Filter Bags for Low and Medium Viscosity Liquid Filtration

Felt filter bags in various sizes are displayed.

Felt filter bags are manufactured from needle felt materials in PP, PE or PTFE and are the most widely used and most economic filter bags for liquid filtration. Felt filter bags are suitable for low and medium viscosity liquid filtration to retain impurities.


  • PE, PP, galvanized steel and stainless steel seal rings are available.
  • A wide chemical compatibility and suitable for a wide range of liquid filtration.
  • Silicone free felt media for paint and automotive applications.
  • Thermally bonded or sewn seams for bypass-free filtration.
  • Singed filter bag surface treatment can effectively prevent fiber releasing and contaminating filtrate.
  • No. 1, 2, 3, 4 and 5 filter bags are available to meet the demands of various flow.


A PP felt filter bag is displayed.

PP felt filter bag

A PE felt filter bag is displayed.

PE felt filter bag

A PTFE felt filter bag is displayed.

PTFE felt filter bag


Felt Filter Bags
Model Material Filter Rating (μm) Working Temperature (°C) Nominal Efficiency
01 PP 1, 5, 10, 25, 50, 75, 100, 150, 200 80 85%
02 PE 1, 5, 10, 25, 50, 75, 100, 150, 200 170 85%
03 PTFE 1, 5, 10, 25 270 85%
  • Replaceable differential pressure is 0.10 MPa and shall not exceed 0.18 MPa.
  • Seal rings are made of PP, PE, galvanized or stainless steel.